The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/dev/sec/sec.h

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (C) 2008-2009 Semihalf, Piotr Ziecik
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
   19  * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   20  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
   21  * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
   22  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
   23  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
   24  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
   25  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   26  *
   27  * $FreeBSD$
   28  */
   29 
   30 #ifndef _SEC_H
   31 #define _SEC_H
   32 
   33 /*
   34  * Each SEC channel can hold up to 24 descriptors. All 4 channels can be
   35  * simultaneously active holding 96 descriptors. Each descriptor can use 0 or
   36  * more link table entries depending of size and granulation of input/output
   37  * data. One link table entry is needed for each 65535 bytes of data.
   38  */
   39 
   40 /* Driver settings */
   41 #define SEC_TIMEOUT                     100000
   42 #define SEC_MAX_SESSIONS                256
   43 #define SEC_DESCRIPTORS                 256     /* Must be power of 2 */
   44 #define SEC_LT_ENTRIES                  1024    /* Must be power of 2 */
   45 #define SEC_MAX_IV_LEN                  16
   46 #define SEC_MAX_KEY_LEN                 64
   47 
   48 /* SEC information */
   49 #define SEC_20_ID                       0x0000000000000040ULL
   50 #define SEC_30_ID                       0x0030030000000000ULL
   51 #define SEC_31_ID                       0x0030030100000000ULL
   52 #define SEC_CHANNELS                    4
   53 #define SEC_POINTERS                    7
   54 #define SEC_MAX_DMA_BLOCK_SIZE          0xFFFF
   55 #define SEC_MAX_FIFO_LEVEL              24
   56 #define SEC_DMA_ALIGNMENT               8
   57 
   58 #define __packed__                      __attribute__ ((__packed__))
   59 
   60 struct sec_softc;
   61 struct sec_session;
   62 
   63 /* SEC descriptor definition */
   64 struct sec_hw_desc_ptr {
   65         u_int           shdp_length             : 16;
   66         u_int           shdp_j                  : 1;
   67         u_int           shdp_extent             : 7;
   68         u_int           __padding0              : 4;
   69         uint64_t        shdp_ptr                : 36;
   70 } __packed__;
   71 
   72 struct sec_hw_desc {
   73         union __packed__ {
   74                 struct __packed__ {
   75                         u_int   eu_sel0         : 4;
   76                         u_int   mode0           : 8;
   77                         u_int   eu_sel1         : 4;
   78                         u_int   mode1           : 8;
   79                         u_int   desc_type       : 5;
   80                         u_int   __padding0      : 1;
   81                         u_int   dir             : 1;
   82                         u_int   dn              : 1;
   83                         u_int   __padding1      : 32;
   84                 } request;
   85                 struct __packed__ {
   86                         u_int   done            : 8;
   87                         u_int   __padding0      : 27;
   88                         u_int   iccr0           : 2;
   89                         u_int   __padding1      : 6;
   90                         u_int   iccr1           : 2;
   91                         u_int   __padding2      : 19;
   92                 } feedback;
   93         } shd_control;
   94 
   95         struct sec_hw_desc_ptr  shd_pointer[SEC_POINTERS];
   96 
   97         /* Data below is mapped to descriptor pointers */
   98         uint8_t                 shd_iv[SEC_MAX_IV_LEN];
   99         uint8_t                 shd_key[SEC_MAX_KEY_LEN];
  100         uint8_t                 shd_mkey[SEC_MAX_KEY_LEN];
  101         uint8_t                 shd_digest[HASH_MAX_LEN];
  102 } __packed__;
  103 
  104 #define shd_eu_sel0             shd_control.request.eu_sel0
  105 #define shd_mode0               shd_control.request.mode0
  106 #define shd_eu_sel1             shd_control.request.eu_sel1
  107 #define shd_mode1               shd_control.request.mode1
  108 #define shd_desc_type           shd_control.request.desc_type
  109 #define shd_dir                 shd_control.request.dir
  110 #define shd_dn                  shd_control.request.dn
  111 #define shd_done                shd_control.feedback.done
  112 #define shd_iccr0               shd_control.feedback.iccr0
  113 #define shd_iccr1               shd_control.feedback.iccr1
  114 
  115 /* SEC link table entries definition */
  116 struct sec_hw_lt {
  117         u_int                   shl_length      : 16;
  118         u_int                   __padding0      : 6;
  119         u_int                   shl_r           : 1;
  120         u_int                   shl_n           : 1;
  121         u_int                   __padding1      : 4;
  122         uint64_t                shl_ptr         : 36;
  123 } __packed__;
  124 
  125 struct sec_dma_mem {
  126         void                    *dma_vaddr;
  127         bus_addr_t              dma_paddr;
  128         bus_dma_tag_t           dma_tag;
  129         bus_dmamap_t            dma_map;
  130         u_int                   dma_is_map;
  131 };
  132 
  133 struct sec_desc {
  134         struct sec_hw_desc      *sd_desc;
  135         bus_addr_t              sd_desc_paddr;
  136         struct sec_dma_mem      sd_ptr_dmem[SEC_POINTERS];
  137         struct cryptop          *sd_crp;
  138         u_int                   sd_lt_used;
  139         u_int                   sd_error;
  140 };
  141 
  142 struct sec_lt {
  143         struct sec_hw_lt        *sl_lt;
  144         bus_addr_t              sl_lt_paddr;
  145 };
  146 
  147 struct sec_eu_methods {
  148         bool    (*sem_newsession)(const struct crypto_session_params *csp);
  149         int     (*sem_make_desc)(struct sec_softc *sc,
  150             const struct crypto_session_params *csp, struct sec_desc *desc,
  151             struct cryptop *crp);
  152 };
  153 
  154 struct sec_session {
  155         struct sec_eu_methods   *ss_eu;
  156         uint8_t                 ss_key[SEC_MAX_KEY_LEN];
  157         uint8_t                 ss_mkey[SEC_MAX_KEY_LEN];
  158         int                     ss_mlen;
  159 };
  160 
  161 struct sec_desc_map_info {
  162         struct sec_softc        *sdmi_sc;
  163         bus_size_t              sdmi_size;
  164         bus_size_t              sdmi_offset;
  165         struct sec_lt           *sdmi_lt_first;
  166         struct sec_lt           *sdmi_lt_last;
  167         u_int                   sdmi_lt_used;
  168 };
  169 
  170 struct sec_softc {
  171         device_t                sc_dev;
  172         int32_t                 sc_cid;
  173         int                     sc_blocked;
  174         int                     sc_shutdown;
  175         u_int                   sc_version;
  176 
  177         uint64_t                sc_int_error_mask;
  178         uint64_t                sc_channel_idle_mask;
  179 
  180         struct mtx              sc_controller_lock;
  181         struct mtx              sc_descriptors_lock;
  182 
  183         struct sec_desc         sc_desc[SEC_DESCRIPTORS];
  184         u_int                   sc_free_desc_get_cnt;
  185         u_int                   sc_free_desc_put_cnt;
  186         u_int                   sc_ready_desc_get_cnt;
  187         u_int                   sc_ready_desc_put_cnt;
  188         u_int                   sc_queued_desc_get_cnt;
  189         u_int                   sc_queued_desc_put_cnt;
  190 
  191         struct sec_lt           sc_lt[SEC_LT_ENTRIES + 1];
  192         u_int                   sc_lt_alloc_cnt;
  193         u_int                   sc_lt_free_cnt;
  194 
  195         struct sec_dma_mem      sc_desc_dmem;   /* descriptors DMA memory */
  196         struct sec_dma_mem      sc_lt_dmem;     /* link tables DMA memory */
  197 
  198         struct resource         *sc_rres;       /* register resource */
  199         int                     sc_rrid;        /* register rid */
  200         struct {
  201                 bus_space_tag_t bst;
  202                 bus_space_handle_t bsh;
  203         } sc_bas;
  204 
  205         struct resource         *sc_pri_ires;   /* primary irq resource */
  206         void                    *sc_pri_ihand;  /* primary irq handler */
  207         int                     sc_pri_irid;    /* primary irq resource id */
  208 
  209         struct resource         *sc_sec_ires;   /* secondary irq resource */
  210         void                    *sc_sec_ihand;  /* secondary irq handler */
  211         int                     sc_sec_irid;    /* secondary irq resource id */
  212 };
  213 
  214 /* Locking macros */
  215 #define SEC_LOCK(sc, what)                                              \
  216         mtx_lock(&(sc)->sc_ ## what ## _lock)
  217 #define SEC_UNLOCK(sc, what)                                            \
  218         mtx_unlock(&(sc)->sc_ ## what ## _lock)
  219 #define SEC_LOCK_ASSERT(sc, what)                                       \
  220         mtx_assert(&(sc)->sc_ ## what ## _lock, MA_OWNED)
  221 
  222 /* Read/Write definitions */
  223 #define SEC_READ(sc, reg)                                               \
  224         bus_space_read_8((sc)->sc_bas.bst, (sc)->sc_bas.bsh, (reg))
  225 #define SEC_WRITE(sc, reg, val)                                         \
  226         bus_space_write_8((sc)->sc_bas.bst, (sc)->sc_bas.bsh, (reg), (val))
  227 
  228 /* Base allocation macros (warning: wrap must be 2^n) */
  229 #define SEC_CNT_INIT(sc, cnt, wrap)                                     \
  230         (((sc)->cnt) = ((wrap) - 1))
  231 #define SEC_ADD(sc, cnt, wrap, val)                                     \
  232         ((sc)->cnt = (((sc)->cnt) + (val)) & ((wrap) - 1))
  233 #define SEC_INC(sc, cnt, wrap)                                          \
  234         SEC_ADD(sc, cnt, wrap, 1)
  235 #define SEC_DEC(sc, cnt, wrap)                                          \
  236         SEC_ADD(sc, cnt, wrap, -1)
  237 #define SEC_GET_GENERIC(sc, tab, cnt, wrap)                             \
  238         ((sc)->tab[SEC_INC(sc, cnt, wrap)])
  239 #define SEC_PUT_GENERIC(sc, tab, cnt, wrap, val)                        \
  240         ((sc)->tab[SEC_INC(sc, cnt, wrap)] = val)
  241 
  242 /* Interface for descriptors */
  243 #define SEC_GET_FREE_DESC(sc)                                           \
  244         &SEC_GET_GENERIC(sc, sc_desc, sc_free_desc_get_cnt, SEC_DESCRIPTORS)
  245 
  246 #define SEC_PUT_BACK_FREE_DESC(sc)                                      \
  247         SEC_DEC(sc, sc_free_desc_get_cnt, SEC_DESCRIPTORS)
  248 
  249 #define SEC_DESC_FREE2READY(sc)                                         \
  250         SEC_INC(sc, sc_ready_desc_put_cnt, SEC_DESCRIPTORS)
  251 
  252 #define SEC_GET_READY_DESC(sc)                                          \
  253         &SEC_GET_GENERIC(sc, sc_desc, sc_ready_desc_get_cnt, SEC_DESCRIPTORS)
  254 
  255 #define SEC_PUT_BACK_READY_DESC(sc)                                     \
  256         SEC_DEC(sc, sc_ready_desc_get_cnt, SEC_DESCRIPTORS)
  257 
  258 #define SEC_DESC_READY2QUEUED(sc)                                       \
  259         SEC_INC(sc, sc_queued_desc_put_cnt, SEC_DESCRIPTORS)
  260 
  261 #define SEC_GET_QUEUED_DESC(sc)                                         \
  262         &SEC_GET_GENERIC(sc, sc_desc, sc_queued_desc_get_cnt, SEC_DESCRIPTORS)
  263 
  264 #define SEC_PUT_BACK_QUEUED_DESC(sc)                                    \
  265         SEC_DEC(sc, sc_queued_desc_get_cnt, SEC_DESCRIPTORS)
  266 
  267 #define SEC_DESC_QUEUED2FREE(sc)                                        \
  268         SEC_INC(sc, sc_free_desc_put_cnt, SEC_DESCRIPTORS)
  269 
  270 #define SEC_FREE_DESC_CNT(sc)                                           \
  271         (((sc)->sc_free_desc_put_cnt - (sc)->sc_free_desc_get_cnt - 1)  \
  272         & (SEC_DESCRIPTORS - 1))
  273 
  274 #define SEC_READY_DESC_CNT(sc)                                          \
  275         (((sc)->sc_ready_desc_put_cnt - (sc)->sc_ready_desc_get_cnt) &  \
  276         (SEC_DESCRIPTORS - 1))
  277 
  278 #define SEC_QUEUED_DESC_CNT(sc)                                         \
  279         (((sc)->sc_queued_desc_put_cnt - (sc)->sc_queued_desc_get_cnt)  \
  280         & (SEC_DESCRIPTORS - 1))
  281 
  282 #define SEC_DESC_SYNC(sc, mode) do {                                    \
  283         sec_sync_dma_mem(&((sc)->sc_desc_dmem), (mode));                \
  284         sec_sync_dma_mem(&((sc)->sc_lt_dmem), (mode));                  \
  285 } while (0)
  286 
  287 #define SEC_DESC_SYNC_POINTERS(desc, mode) do {                         \
  288         u_int i;                                                        \
  289         for (i = 0; i < SEC_POINTERS; i++)                              \
  290                 sec_sync_dma_mem(&((desc)->sd_ptr_dmem[i]), (mode));    \
  291 } while (0)
  292 
  293 #define SEC_DESC_FREE_POINTERS(desc) do {                               \
  294         u_int i;                                                        \
  295         for (i = 0; i < SEC_POINTERS; i++)                              \
  296                 sec_free_dma_mem(&(desc)->sd_ptr_dmem[i]);              \
  297 } while (0);
  298 
  299 #define SEC_DESC_PUT_BACK_LT(sc, desc)                                  \
  300         SEC_PUT_BACK_LT(sc, (desc)->sd_lt_used)
  301 
  302 #define SEC_DESC_FREE_LT(sc, desc)                                      \
  303         SEC_FREE_LT(sc, (desc)->sd_lt_used)
  304 
  305 /* Interface for link tables */
  306 #define SEC_ALLOC_LT_ENTRY(sc)                                          \
  307         &SEC_GET_GENERIC(sc, sc_lt, sc_lt_alloc_cnt, SEC_LT_ENTRIES)
  308 
  309 #define SEC_PUT_BACK_LT(sc, num)                                        \
  310         SEC_ADD(sc, sc_lt_alloc_cnt, SEC_LT_ENTRIES, -(num))
  311 
  312 #define SEC_FREE_LT(sc, num)                                            \
  313         SEC_ADD(sc, sc_lt_free_cnt, SEC_LT_ENTRIES, num)
  314 
  315 #define SEC_FREE_LT_CNT(sc)                                             \
  316         (((sc)->sc_lt_free_cnt - (sc)->sc_lt_alloc_cnt - 1)             \
  317         & (SEC_LT_ENTRIES - 1))
  318 
  319 /* Size of SEC registers area */
  320 #define SEC_IO_SIZE             0x10000
  321 
  322 /* SEC Controller registers */
  323 #define SEC_IER                 0x1008
  324 #define SEC_INT_CH_DN(n)        (1ULL << (((n) * 2) + 32))
  325 #define SEC_INT_CH_ERR(n)       (1ULL << (((n) * 2) + 33))
  326 #define SEC_INT_ITO             (1ULL << 55)
  327 
  328 #define SEC_ISR                 0x1010
  329 #define SEC_ICR                 0x1018
  330 #define SEC_ID                  0x1020
  331 
  332 #define SEC_EUASR               0x1028
  333 #define SEC_EUASR_RNGU(r)       (((r) >> 0) & 0xF)
  334 #define SEC_EUASR_PKEU(r)       (((r) >> 8) & 0xF)
  335 #define SEC_EUASR_KEU(r)        (((r) >> 16) & 0xF)
  336 #define SEC_EUASR_CRCU(r)       (((r) >> 20) & 0xF)
  337 #define SEC_EUASR_DEU(r)        (((r) >> 32) & 0xF)
  338 #define SEC_EUASR_AESU(r)       (((r) >> 40) & 0xF)
  339 #define SEC_EUASR_MDEU(r)       (((r) >> 48) & 0xF)
  340 #define SEC_EUASR_AFEU(r)       (((r) >> 56) & 0xF)
  341 
  342 #define SEC_MCR                 0x1030
  343 #define SEC_MCR_SWR             (1ULL << 32)
  344 
  345 /* SEC Channel registers */
  346 #define SEC_CHAN_CCR(n)         (((n) * 0x100) + 0x1108)
  347 #define SEC_CHAN_CCR_CDIE       (1ULL << 1)
  348 #define SEC_CHAN_CCR_NT         (1ULL << 2)
  349 #define SEC_CHAN_CCR_AWSE       (1ULL << 3)
  350 #define SEC_CHAN_CCR_CDWE       (1ULL << 4)
  351 #define SEC_CHAN_CCR_BS         (1ULL << 8)
  352 #define SEC_CHAN_CCR_WGN        (1ULL << 13)
  353 #define SEC_CHAN_CCR_R          (1ULL << 32)
  354 #define SEC_CHAN_CCR_CON        (1ULL << 33)
  355 
  356 #define SEC_CHAN_CSR(n)         (((n) * 0x100) + 0x1110)
  357 #define SEC_CHAN_CSR2_FFLVL_M   0x1FULL
  358 #define SEC_CHAN_CSR2_FFLVL_S   56
  359 #define SEC_CHAN_CSR2_GSTATE_M  0x0FULL
  360 #define SEC_CHAN_CSR2_GSTATE_S  48
  361 #define SEC_CHAN_CSR2_PSTATE_M  0x0FULL
  362 #define SEC_CHAN_CSR2_PSTATE_S  40
  363 #define SEC_CHAN_CSR2_MSTATE_M  0x3FULL
  364 #define SEC_CHAN_CSR2_MSTATE_S  32
  365 #define SEC_CHAN_CSR3_FFLVL_M   0x1FULL
  366 #define SEC_CHAN_CSR3_FFLVL_S   24
  367 #define SEC_CHAN_CSR3_MSTATE_M  0x1FFULL
  368 #define SEC_CHAN_CSR3_MSTATE_S  32
  369 #define SEC_CHAN_CSR3_PSTATE_M  0x7FULL
  370 #define SEC_CHAN_CSR3_PSTATE_S  48
  371 #define SEC_CHAN_CSR3_GSTATE_M  0x7FULL
  372 #define SEC_CHAN_CSR3_GSTATE_S  56
  373 
  374 #define SEC_CHAN_CDPR(n)        (((n) * 0x100) + 0x1140)
  375 #define SEC_CHAN_FF(n)          (((n) * 0x100) + 0x1148)
  376 
  377 /* SEC Execution Units numbers */
  378 #define SEC_EU_NONE             0x0
  379 #define SEC_EU_AFEU             0x1
  380 #define SEC_EU_DEU              0x2
  381 #define SEC_EU_MDEU_A           0x3
  382 #define SEC_EU_MDEU_B           0xB
  383 #define SEC_EU_RNGU             0x4
  384 #define SEC_EU_PKEU             0x5
  385 #define SEC_EU_AESU             0x6
  386 #define SEC_EU_KEU              0x7
  387 #define SEC_EU_CRCU             0x8
  388 
  389 /* SEC descriptor types */
  390 #define SEC_DT_COMMON_NONSNOOP  0x02
  391 #define SEC_DT_HMAC_SNOOP       0x04
  392 
  393 /* SEC AESU declarations and definitions */
  394 #define SEC_AESU_MODE_ED        (1ULL << 0)
  395 #define SEC_AESU_MODE_CBC       (1ULL << 1)
  396 
  397 /* SEC DEU declarations and definitions */
  398 #define SEC_DEU_MODE_ED         (1ULL << 0)
  399 #define SEC_DEU_MODE_TS         (1ULL << 1)
  400 #define SEC_DEU_MODE_CBC        (1ULL << 2)
  401 
  402 /* SEC MDEU declarations and definitions */
  403 #define SEC_HMAC_HASH_LEN       12
  404 #define SEC_MDEU_MODE_SHA1      0x00    /* MDEU A */
  405 #define SEC_MDEU_MODE_SHA384    0x00    /* MDEU B */
  406 #define SEC_MDEU_MODE_SHA256    0x01
  407 #define SEC_MDEU_MODE_MD5       0x02    /* MDEU A */
  408 #define SEC_MDEU_MODE_SHA512    0x02    /* MDEU B */
  409 #define SEC_MDEU_MODE_SHA224    0x03
  410 #define SEC_MDEU_MODE_PD        (1ULL << 2)
  411 #define SEC_MDEU_MODE_HMAC      (1ULL << 3)
  412 #define SEC_MDEU_MODE_INIT      (1ULL << 4)
  413 #define SEC_MDEU_MODE_SMAC      (1ULL << 5)
  414 #define SEC_MDEU_MODE_CICV      (1ULL << 6)
  415 #define SEC_MDEU_MODE_CONT      (1ULL << 7)
  416 
  417 #endif

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